Patent Application
20240300553
The present application claims priority to Japanese Patent Application No. 2023-035352, filed Mar. 8, 2023. The contents of this application are incorporated herein by reference in their entirety.
The present invention relates to a rail vehicle.
A rail vehicle operated along a laid track generally has a hexahedral rail vehicle structure including an underframe that forms a floor surface, end structures erected on both end portions in a longitudinal direction of the underframe, side structures erected on both end portions in a width direction of the underframe, and a roof structure placed on upper end portions of the end structures and the roof structure. An upper floor is provided on an upper surface of the underframe, and a seat or the like is provided on an upper surface of the upper floor. A heat insulating material and a sound insulating material are provided on a vehicle inner side of the side structures and the roof structure, and interior materials such as a side material and a ceiling material are provided in a manner of covering the heat insulating material and the sound insulating material, thereby providing a comfortable vehicle interior environment.
Generally, an in-vehicle display that provides various kinds of information to a passenger and the like who board a rail vehicle is provided on an upper portion of an inner end having a through door at an end portion in a longitudinal direction of the rail vehicle.
To provide an in-vehicle display device that can increase an amount of displayable information and can prevent passengers who pass through a passage from blocking a projection image, PTL 1 discloses a railway vehicle including an in-vehicle display device provided with a projector that projects an image with a vehicle inner side surface of the railway vehicle as a projection surface. The projection surface is provided on an end surface of the railway vehicle, a through passage is provided on the end surface, and a plurality of projectors are disposed on a vehicle inner side surface in a width direction of the railway vehicle in a manner of not overlapping the through passage as viewed from a longitudinal direction of the railway vehicle, and are disposed between the end surface and a seat closest to the end surface as viewed from the width direction of the railway vehicle.
According to PTL 1, it is desirable to provide a large display unit so that a passenger who is seated on a seat on one end portion in a longitudinal direction of a rail vehicle and is away from an in-vehicle display device can visually see the in-vehicle display device provided at the other end portion in the longitudinal direction.
However, since the in-vehicle display device is provided in a space between an upper end portion of a through passage door and a ceiling, an increase in a size of a display unit of the in-vehicle display device is limited due to the limitation of a vehicle body. Further, a weight and costs of the in-vehicle display device having a large display unit tend to increase.
Therefore, instead of the in-vehicle display device in the related art, an in-vehicle display device including a projector is studied, in which the projector projects various kinds of information on an inner end or a ceiling and transmits the information to a passenger.
An object of the invention is to provide a rail vehicle including a projector-type in-vehicle display device that is provided with a projector and a projection surface, the rail vehicle including the in-vehicle display device that can prevent a crew or the like who walks on a passage between seats from blocking a projection image, that provides good visibility for a passenger or the like, and that has a light weight.
In order to solve the above problem, a typical rail vehicle according to the invention includes:
According to the invention, it is possible to provide a rail vehicle including a projector-type in-vehicle display device that is provided with a projector and a projection surface, the rail vehicle including the in-vehicle display device that can prevent a crew or the like who walks on a passage between seats from blocking a projection image, that provides good visibility for a passenger or the like, and that has a light weight.
Problems, configurations, and effects other than those described above will become apparent by description of the following embodiments.
Hereinafter, embodiments of a rail vehicle according to the invention will be described with reference to the drawings. First, directions are defined in order to describe a configuration of a rail vehicle. A longitudinal direction of the rail vehicle is defined as an x direction, a width direction of the rail vehicle is defined as a y direction, and a height direction of the rail vehicle is defined as a z direction. Hereinafter, directions may be simply referred to as the x direction, the y direction, and the z direction.
The rail vehicle is a vehicle operated along a laid track, and includes a railway vehicle, a monorail vehicle, a new transportation system vehicle, a streetcar, or the like. Hereinafter, a railway vehicle will be described as a representative example of a rail vehicle.
The underframe 10 includes an upper floor 12 on an upper surface of the underframe 10 and seats 14 on an upper surface of the upper floor 12. A side film 24 serving as an interior material is provided on a vehicle inner side of the side structure 20, and similarly, a ceiling film 42 serving as an interior material is provided on a vehicle inner side of the roof structure 40.
A luggage rack portion 21 is provided on a vehicle inner side of the upper end portion in the z direction of the side structure 20. The luggage rack portion 21 is provided with a projector 60 that projects various kinds of information onto the ceiling film 42. The projector 60 is provided at a position of a height dimension H in the z direction from the upper floor 12.
The side structure 20 includes a plurality of windows 29 discretely provided along the x direction of the side structure 20. An armrest portion 28 is provided below the window 29. The armrest portion 28 has a protrusion shape toward a vehicle external side and is provided at substantially the same height as an armrest of the seat 14. A passenger seated on the seat 14 can place an arm by using an enlarged space from the armrest of the seat 14 to a recessed portion on a vehicle inner side of the armrest portion 28.
The ceiling film 42 is provided in a manner of extending from one end portion to the other end portion in the y direction of the roof structure 40, and a central portion in the y direction of the ceiling film 42 is connected to a central support portion (not shown) supported by a central portion in the y direction of the roof structure 40 in a vibration proof manner, and an end portion in the y direction of the ceiling film 42 is connected to a film and sound absorbing material support portion 49 supported by an end portion in the y direction of the roof structure 40 in a vibration proof manner.
The film and sound absorbing material support portion 49 includes a rectangular cross-section portion having a rectangular cross section intersecting the x direction, an extending portion extending in the z direction from one surface of the rectangular cross-section portion, and a horizontal portion 49a extending in the y direction from an end portion in the z direction of the extending portion. The horizontal part 49a is supported by a receiving portion 40d in a vibration proof manner via a vibration-proof rubber 58, and the receiving portion 40d has an L-shaped cross section and is connected to the vehicle inner side plate 40b of the roof structure 40.
Both end portions in the y direction of the ceiling film 42 are connected to the film and sound absorbing material support portions 49 via elastic bodies 56 which are, for example, coil springs, and the ceiling film 42 is provided in the railway vehicle 1 in a state of being constantly stretched (in a state of being applied with tension) by tension (elastic force) of the elastic bodies 56. The film and sound absorbing material support portion 49 may include a lamp 46 below the elastic body 56. When the lamp 46 has directivity such that illumination light is directed downward (that is, the lamp 46 does not directly illuminate the ceiling film 42), it is preferable to prevent the illumination of the lamp 46 from affecting a projection image.
The side structure 20 is provided with the luggage rack portion 21 at an upper end portion in the z direction of the side structure 20. The luggage rack portion 21 includes luggage-receiving-portion bottom portions 21b for receiving luggage or the like placed on the luggage rack portion 21, luggage-receiving-portion back side panels 21d erected on one end edges (a side close to the side structure 20) in the y direction of the luggage-receiving-portion bottom portions 21b, and luggage-receiving-portion front side panels 21a that are provided in a manner of substantially parallel to the luggage-receiving-portion back side panels 21d and are erected on the other end edges (a side close to a center line F of a central portion in the y direction of the railway vehicle 1) in the y direction of the luggage-receiving-portion bottom portions 21b. An upper end of each of the luggage-receiving-portion back side panels 21d is located higher than an upper end of the luggage-receiving-portion front side panel 21a.
In the luggage rack portion 21, a luggage-receiving-portion support portion 21e fixed to the luggage-receiving-portion back side panel 21d and the luggage-receiving-portion support portion 21e fixed to the luggage-receiving-portion bottom portion 21b are respectively supported via the vibration-proof rubbers 58 on the side structure 20 in a vibration proof manner by a pair of receiving portions 20d extending in a horizontal direction from the vehicle inner side plate 20b of the side structure 20.
One end portion of an eaves portion interior panel 48 is connected to an upper end portion in the z direction of the luggage-receiving-portion back side panel 21d. The other end portion of the eaves portion interior panel 48 is fixed to a central support portion (not shown) supported in a vibration proof manner by a central portion in the y direction of the roof structure 40.
The luggage-receiving-portion bottom portion 21b includes a film and sound absorbing material support portion 21c extending in parallel to the luggage-receiving-portion front side panel 21a from a central portion in the y direction of the luggage-receiving-portion bottom portion 21b. The film and sound absorbing material support portion 21c supports the sound absorbing material support plate 44 provided along the side structure 20 and an upper end portion in the z direction of the side film 24.
Lower end portions in a −z direction of the sound absorbing material support plate 44 and the side film 24 are held by a film and sound absorbing material support portion (not shown) supported by a vibration-proof rubber fixed to a vibration-proof rubber receiver provided at a lower end portion in the −z direction of the side structure 20. Although not described in detail, one end portion in the z direction of the side film 24 is connected to the side structure 20 via an elastic body, and is provided in the railway vehicle 1 in a state in which the side film 24 is constantly stretched by tension of the elastic body.
The luggage-receiving-portion front side panels 21a are discretely (intermittently) provided only at positions corresponding to the seats 14 along the x direction of the luggage rack portion 21 (see
The railway vehicle 1 may include a plurality of in-vehicle display devices disposed along the x direction of the railway vehicle 1 and including a plurality of projectors 60 near one end portion in the x direction of the luggage rack portion 21, at a central portion in the x direction of the luggage rack portion 21, and near the other end portion in the x direction of the luggage rack portion 21.
The luggage-receiving-portion front side panels 21a constituting the luggage rack portion 21 are provided discretely (intermittently) along the x direction of the railway vehicle 1, and the luggage-receiving-portion front side panel 21a is not provided at a position corresponding to a position between the seat 14 and the seat 14. The luggage-receiving-portion front side panel 21a is provided on the luggage rack portion 21 in such a manner that a part (at least a seat upper surface) or all of the seat 14 is included in a range in the x direction defined by perpendicular lines drawn downward (in the −z direction) from one end portion in the x direction of the luggage-receiving-portion front side panel 21a and the other end portion of the luggage-receiving-portion front side panel 21a. Accordingly, the line of sight of a passenger seated in the seat 14 is easily directed to an image projected on the ceiling film 42 by the projector 60.
The projector 60 is provided at a portion of the luggage-receiving-portion back side panel 21d located between the luggage-receiving-portion front side panel 21a and the luggage-receiving-portion front side panel 21a that are discretely (intermittently) provided (that is, between the luggage-receiving-portion front side panels 21a adjacent to each other in the x direction). This portion is referred to as a front side panel absent portion. A device 61 such as an LED (a lighting device), a speaker (broadcast equipment), and a monitoring (security) camera may be provided at the front side panel absent portion of the luggage-receiving-portion back side panel 21d where the projector 60 is not provided. The luggage rack portion 21 may be made of a metal such as an aluminum alloy having a lightweight and a high thermal conductivity.
Further, the luggage rack portion 21 may be implemented as a luggage rack portion module in which a dimension in the x direction of the luggage rack portion 21 is set to a length that can be handled in the railway vehicle 1, and a multifunction receiving portion that can commonly include the projector 60 and the devices 61 may be assembled in advance to the luggage-receiving-portion back side panel 21d of the luggage rack portion module.
When the luggage rack portion module is manufactured by outwork (vehicle outside work), the projector 60, the lighting device (the device 61), the speaker (the device 61), and the security camera (the device 61) can be provided in advance in the luggage rack portion module in each multifunction receiving portion. When the luggage rack portion module is fixed to the railway vehicle 1, wires of the projectors 60 and the devices 61 incorporated in advance in the luggage rack portion module may be connected to wires provided in the railway vehicle 1 by a connector.
As shown in
Further, tension can be constantly applied to the ceiling film 42 by providing the ceiling film 42 constituting the projection surface 62 via the elastic body 56. Therefore, even when the ceiling film 42 expands and contracts due to aging or the like after the ceiling film 42 is constructed, since tension is constantly applied by the elastic body 56, the ceiling film 42 can be prevented from sagging and wrinkling, and thus an image projected onto the ceiling film 42 is not distorted over a long period of time and the large projection surface 62 with good visibility can be maintained.
Further, since the projector 60 constituting the in-vehicle display device is provided at a height of a dimension H from the upper floor 12 on the luggage rack portion 21 located at a sufficiently high position from the upper floor 12, it is possible to prevent a head of a passenger or the like who walks on a passage 16 from blocking information projected by the projector 60, and thus it is possible to implement the in-vehicle display device with good visibility and high quality. Since the luggage rack portion 21 to which the projector 60 is attached is supported in a vibration manner relative to the side structure 20, the luggage rack portion 21 and the projector 60 can be prevented from vibrating to prevent a situation in which it is difficult to visually recognize a projection image.
Further, since the luggage rack portion 21 is made of a light alloy such as aluminum having a light weight and a high thermal conductivity, heat generated from the projector 60 and the devices 61 can be transferred to the luggage-receiving-portion back side panel 21d and dissipated into the air. Accordingly heat of the projector 60 and the devices 61 can be removed, and thus deterioration of the projector 60 and the devices 61 caused by the heat can be prevented.
Further, it is possible to reduce an amount of materials used for the luggage rack portion 21 and promote a weight reduction of the luggage rack portion 21 by providing the luggage rack portion 21 including the luggage-receiving-portion front side panel 21a provided discretely (intermittently) along the x direction of the railway vehicle 1.
Furthermore, since luggage such as a bag of a passenger or the like is placed on the luggage rack portion 21 where the luggage-receiving-portion front side panel 21a is present, the projector 60 is provided at a front side panel absent portion of the luggage-receiving-portion back side panel 21d, so that blocking of an image such as information projected by the projector 60 can be prevented even when luggage (a bag or the like) is placed on the luggage rack portion 21, and thus it is possible to implement an in-vehicle information device having good visibility and high quality.
Furthermore, since the projector 60 is provided at the front side panel absent portion of the luggage-receiving-portion back side panel 21d, it is possible to prevent a head, an arm, or the like of a passenger or the like who places luggage (a bag or the like) on or takes off luggage (a bag or the like) from the luggage rack portion 21 from blocking an image such as information projected by the projector 60, and thus it is possible to implement an in-vehicle information device having good visibility and high quality.
Furthermore, since work can be performed by outwork by implementing a luggage rack module, the number of manufacturing steps can be reduced and a common multifunction receiving portion can be provided, accordingly a unified design can be achieved regardless of the projector 60 and the devices 61 provided in the multifunction receiving portion, and thus the appearance of the interior of the railway vehicle 1 can be improved.
According to the invention, it is possible to provide the rail vehicle including the projector-type in-vehicle display device that is provided with the projector and the projection surface, the rail vehicle including the in-vehicle display device that can prevent a crew or the like who walks on a passage between seats from blocking a projection image, that provides good visibility for a passenger or the like, and that has a light weight.
The present specification includes the following disclosure of inventions.
A rail vehicle includes:
In the rail vehicle according to the first aspect,
In the rail vehicle according to the first or second aspect,
In the rail vehicle according to the third aspect
In the rail vehicle according to the fourth aspect,
In the rail vehicle according to the fourth or fifth aspect,
In the rail vehicle according to any one of the first to seventh aspects,
| Number | Date | Country | Kind |
|---|---|---|---|
| 2023-035352 | Mar 2023 | JP | national |
